Other than ride height and rear suspension…IMO.. doubtful anything physically different with powertrain of significance
https://www.greenwaymazda.com/mazda-cx-50-vs-cx-5-comparison/
Curious if your rear wiper and cargo light still work? When my rear BCM went out those two items didn’t work in the rear.
Is your cargo area running the stock incandescent bulb or was it upgraded to an LED?